Crassigyrinus scoticus

Crassigyrinus (meaning "thick tadpole") was an early amphibian that lived during the early Carboniferous period. Crassigyrinus grew up to 2 meters in length, coupled with tiny limbs and unusually large jaws. Crassigyrinus is taxonomically enigmatic, having confused paleontologists for decades with its apparent fish-like and tetrapod features.
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